Core-making for cast pipes



Jan. 20, 1931. R. ARDELT CORE MAKING FOR CAST PIPES Filed Feb. 25, 1930 2 Sheets-Sheet 1 Jan. 20,1931. R. ARDELT CORE MAKING FOR CAST PIPES 2 Shoac-Sheet 2 Filed Feb. 25, 1950.

Flyl In p'iia'e: bee ting; fer-"the 'mg eauc-tm I of castiroIi-pipesjnisand moulds, the menu; factureof thellcoiesipleyszin'impefttmt part, "Fo reach pipe to-b'e'bast, k ewcore is re three 'core Waggd1'1's,;Which' 'alternately paesj 9 1? pip s d th this. eenheetion-jt I core-making; s hop, to ibe 1- arranged immediatelyedjaieeilt'tethehe sting shop,ta,ndthie II II I I each other;

rqtlirecl; in aclditidn to: a sanclndoulcl. 1 For the mass; ip'l o cl'tl'cti onr of Cores thereby rene deredi'l f cess'aryt one has to find the shortest fwayot.bringihgthe"Ceres to thea djinoulds f and oftrajr isporting the core spindles, which always Jha'vet'e he: Used a gain,-. fponrthefine 1 coreemeking hop. 5111 1s ali'eady usual for the in direct communication with oup it of the I dryifig Chambefi; cording to the presentihvefntio the di ection o1 usingmsyfewdr ingeham;

" ber 5531135; fp'os sible', as' by 1 this? means, 1 an V for the coresan'dhlsefor,the' c'ore' spindles; For thiepurposethe drying chainblers ere" of the jtWO' stoi eyftyp'e and always workw vith here}. To Z entble thel 1' re Waggon) t9 be; e 'hfoiightv t0 "the "height {of-the topstorey o -f the drying ehamber-,-'it is arranged to travel o1'1' a'lifting table; The empty core spindles,"

returning frefiithe feasting shop, have to be agaiii' provided? with lc'ore'. materiel; "'j'The waggons, eonveyingfthe eol e spi h'clles; are-yet i drying chamber, and.

must be bieught" to: the side 'whereithe waggehsfzife fs'tandih' with-fresh 'fc0res,; as the eore lethes are" situated jhere. For. this" 'p 'p s 't ef-"w gg l a y ng the; pty? c'oipe spindles,"mu st a; 1s0 be conveyed on lift'Q ing' tables. Innthei 'rqhigh est& pgsiti'onthe" V ewa gens wi'thfthefjempty core spindles-Will then; be bi'olighti heck to the other 'sideldfi the f dnying; chamber over :th'e tdp bf the; dfr'yilfg chambers; T' uch tfan s polgtg" beihg E'PreEerably Ed -m AR m. e ER W LDE=QN E 1 ommxmq 116B; CASTI' P- I I e e we drying 7h 'c re aggoh othitsjstofeys I the eol eispilidle ever the filleclthfyin' bex;hastheffuithepaclyii ntqge that t II II II ,of I the eQre -mekei is net-disturbed by .5

' drying I chzuhbnan d theiitg eenveyan'ce t I I I A further I advance in arriving. at the fas'te'st'methedjof producing; ahd feedi}, ing the .cdres is constitutedbyathe'inereesedr ence {of the ep'p'endeddr windetstoddg' Tiqv j On theqztppended, 'clrewln plant in ac eonda'nce. 'Withthis 1h- Qoffa eestinglshop adjecent theret I I 'fjFi gure 2 is QgIjOur'cI-plQn Of poitionof '-'s1'1c h aplant. .1; *Z L -F igure" 3th We: in elevation-theideyice 61 fibres: i a

heed tyenspo i'of the; Waggqns icohte Thilsitheljhbleqof lithe. 'worl; on th iv ig e'li's-aswtim th o g a c re QfQEiIdPplzuf grammaticel ly Showing; 1 the" .7 working ti' a ck' pmpletely eov 'e d"Iby .the .7

pelt is obv if u s manta lzf -ntfillu fiaeed i;

e; typ 16 pipe i/ -=-?I t iwiihia diameter 100 0120 ,eenri'ebtioii.the:. sup-pl' I I edfe-makihg. shb the feesltin movement insidethese two shops can only'be effected by cranes, as the cores are so heavy that they workmen The moulds 1 in thejcasting shop .2 are could not be carried even by two manufactured, by a pipe mould stamping maare placed in arow in theimmediate neighchine 3-, on a rotary frame 4, of which several bourhood of the shop 5 for the core-making;

The travelling crane 6 takes the cores 7 direct from the core-making shop 5 and deposits them in the moulds For thlSfPIlI'PQSGthG core must change its position from the honz ontaltothe vertical. Thisis done with the aid of acrane 8 in the shop 5, The'reverse processtakes place when the casting shop crane matter the castin of thepipes in the moulds 1,-extracts the ho lowiron spindles of the cores which always have to be used over again) from the moulds "1 and deposits them on the'core waggon'9. The casting 'of t he pipes is effected by means of'the travelling Waggon; so that there are always three wag cranelO and the casting pan 11. In the coremaking shop 5there is thetwo-storied dryn'ig chainber 12a, 12b At eachsideandin the drying chamber there is located a core g(;}ons 9,{ 9a, and 9?) simultaneously in use.

roups of core waggonsand drying chamcorresponding to the number of mould fralrie's I; 4,"in the casting shop 2,-a're' arranged'behind each other in the shop '5. V The i gore waggons 9, 95, are conveyed verticallyjon .lifting tables; 13, 13a; which are lifted and lowered in the embodiment shown in the drawings bytwo hydraulically driven pistons 20; QQa." flhecore waggons 9, 9a mega are v conveyed horizontally bya drawing'device 15 cable chain or "the like) driven by 'an electric winch 14 or by the cranefi. v I

- v ma process The core spindles are extracted from the p I finished castpipes by means of the crane 6,

I the winch 14,- 15 to thelifting table which is standing in a raised position. During this s time there are twocore-waggons9a, 96. in

the drying chamber. Thereufkii'i the litting A table 13a -is lowered and core-maker's 7 17 to one oftheflcore lathcs 16L- Here' the lift the core spindles by means of the crane core spindles are wound roend with straw ropes or the like; after whicha clay-like core mass appliedthereto; The core is then taken from the lathe '16 andlaid again on, theccor'e' Waggon-L When all thecores,

whichlthis Waggon can take, have ha-dth'eir first:zrpplicatiou'ofclay, the core Waggon is drawninto-the drying chann'ber with aid t thegwir eh 14?, 1a. The liftingitab'le a is now brought to such a height that the loaded core Waggon in the top or bottom storey of the drying chamber can be drawn out on to this lifting table. The cores now receive their second application which consists of a more sandy clay (smooth coat). After this has been done, the core waggon is pushed back by=the winch'M into the drying chain'- -bcrand the process is repeated with the next core aggon. After a thirdo eration on the lath'es viz. the application o the graphite, thecore Waggon does not return back to the core making shop but is, with the aid of the crane and using a cable rope or the like and loose rollers, withdrawn from the drying chamber and placed on the lifting table 13, from whererthe cores are-nowpassed. to the moulds l which have inthe meantime, been completed, the above being 'e fi'ected without the coi'eui'iakeis-bcinghindered in the preparation ofthecores by theremoval of finished "cores oiythe bringing back of the empty, core spiudlesifroni tlieicasting shop. 7 The cores and core spindles which a latter are always returning back tobe used 'agaii'r, thusltakethe shortest possible course f oin the core-'making'sho'p to-thecasting shop. The coursesftaken by the cores are diagrammatically represented in j; Figures 5 and" def the drawing. The extended lines show'the course from the -core -making shop tothe moulds i. e.- in the direction of the arrow 1-7. The empty: core spindles-make the return journe and dottedv lint- 18. 1 v 1 I g The invention ensures an uninterrupted and-unimpeded working with aininimum number core spindles and all other workviii the direction ofthe arrow j V ing accessories in the productionstoves core' 1 I making {and .casti'ngrshops, by virtueof the fact that the utmost use is made of suchworking accessories by, avoiding empty running and standing stil-lof the plant. a v Claims: .i Q 1.-.Plant for the manufacture and trans port of cores and core spindles for cast iron pipes, comprising ,waggons for receiving the core spindles extracted from the pipe moulds, which waggons stand in the core-making shop and adjacent'the casting shop, core drying chambers, and means for transferring the said waggons over the core drying chambers to the core lathes on theopposite side of the drying chambers.-- v 2. Plant for the manufacture and transport of cores and core ;s- .)indles forcast .i-ron pipes, comprising av drying chamber having two or more" storeys, means forlraising and pared, to place the" waggfons in sna r storey, means for raising and lowering core ios iis

waggonsion the opposite sideiof the drying i chamber to receive waggons from em -upper I e in the drying. climber; andmeaiisfdr .:-in, the core-making shop z ncl. ailifiirig 'tqcl j I in the casting shop which fimctiorrltoge ther; 'f

so as t Iift the 'c re'frcm'thehorizontal posi- L V q tionon the core ivaggontc averticztl position, I I so the'lpipe mu1ds,-anc1.carries the cpre .spir'idlesl 1 passing a waggongl czirr-ying c0res pind1es,",

sides 0f the drying chamber for raising-and over the drying chamber 'to the core lathes on the opposite side .of the drying chamber."

3; Plant for themainufacture and' transport of cores and core spindles forcast iron --pipes," comprising a drying char berhaving ftwo'or more storeys, lifting tahles on opposite lowering theiwag'gonsinto ,posiiti on opposite an upper storey orinto positio'nfor enabling 2p Waggon to pass bver th'e'drying chamber,

v4:. Plant for" .the' manufacture "and trans" port of cores and core spindles-for castv iron pipes comprising ai drying chamber haying two or more storeygmeans fofraisiiigand Q 'lowering' corewaggons On theside of the dry f the drying chamber; means for passing a f waggon' carrying core sp dlesover the dry dles are 'placedih afhorizqntalfpositicn byithe I i pipes; comprising a drying chamber having "superlmposed compartments for thelrecepeaggons'havirrg core spindlesflth ereonr over} the drylng chamber,' and means 01 dmw v 4 the waggons nto'and out of the dry-lng'chanv i port of coresahd'cere spi ue r r cas PIPGS',' comp-r slng' a; drying "chamber hav ng lowering core-"waggons j'on opposite sides, Qf

acting fw'vith each {drying chamber, and meiii s I dforj nov ng a, Waggonhavmgccore spindles ring chamber on which the cores are prepared e to place :the :waggons in an upper sterey, means for raising andlowerihg core waggcns f 1 on'the opposite side of thedryingchamber f? ito receive wag go ns frgm an upper sfcrey in ing chamber-t0 the core-lathes 0 11 the oppcsi'te side of thedrying, chamh er,' and a lifting tool which latter lifting tcclihserts' thecores in bacl' z'to the core'waggon o n which silchspin-g said liftin'gtoolsT I V V a: 5 P1-1ant for thei manufacture}:and-'trahsv port of cores and core'splriclles'ior cast-Hon tion of core WaggOns,"--t2ib1esf0r raising and the drying cha:11 1ber, 1neen's for moving fthe f her, and also oyergthei topof thech'ember 6. Plantffor the manufac rendimn two superimposed cpmpgirtme its for the ception ofxcorewa gons; meansfifo'r raising and loweringcoreweggons 11 opposite sidesjr' of me drying clm mberfthree wa gons'. 00-.

[111616011 ovcr theYdryingchamber. Q 7 I In witness 3v hereof l hlave s1 gned thls s peer: 

